Mercury News reports Google entered an agreement to lease an additional campus with nine building and up to 630,000 additional square feet of space in Mountain View. The new building is right across Highway 101.

“We had two other major companies interested in our project, and we had been in discussions with them for several months, and then Google came along and was much more intense,” said John Lovewell, partner with Keenan Lovewell Ventures, the owner of “The Quad” campus on Ellis Street. “They were ready to make a commitment — a specific commitment — very quickly, and that’s why we ended up making a deal with them.”

Google recently entered an agreement to buy land nearby to build their own offices from the ground up. The current GooglePlex has about 4.3 million square feet of space and Google continues to buy buildings, acquire land and sign leases to house their growing workforce globally.

Postscript: Forbes reports Google signed a lease on 160,000 square feet of office space at the Central Saint Giles development in London. Google is expected to be paying about $16.8 million per year in rent for this space, that means over a $100 per square foot of space.

Postscript 2: A day later, The Globe and Mail reports Google unveiled their new 34,000-square-foot facility in Kitchener, Ont.’s Tannery district. So as you can see, Google keeps building, leasing and adding new space for their work force all over the world.